That is a twist on things, AL. we sell goat meat at the store: I think I'll try some, just to see what I'm asking my colonists todo(LOL)

Thing is: anyway you shape it; that's a lot of rabbits or goats! I wonder, assuming we wish to rely on 'green' type argiculure; how many goats or rabbits can, say, a family of 4 'free-range' comfortably? 10? 100? And then....can they make a profit at it?

Apparently, ostrich eggs require fairly strict huminity standards to hatch. In arid places, it's not such a big deal, but otherwise.......if we want ostrich flocks to grow 'open-range'; this may stand in the way.

Maybe the best choice is a small number of ostriches and a larger number of pigs.

If we go with the concept of 'fernal-range' critters; we have a lower requirement for care from those who own/use said critters. But there's a chance releasing earth critters into the wild may impact the colony-planets wildlife in a bad way. And even if that's not a issue, those going with this fernal ranging will likely have to accept lose to native predators.

Now if we wish to avoid the fernal-issues, we could have a greater degrees of attention and care given (Herd-protection, shelter, medical-care) but then, is that 'green-enough' to be considered green?

I suspect, whatevers makes the most profit for the colony farmers will come to the forefront. How 'green' that'll end up being would be interesting.